The Tremor Cannon is the primary weapon of the Astra Militarum's Banehammer super-heavy tank. The Tremor Cannon is a potent weapon adapted from a Squat design: it fires large self-propelled rockets with an incredibly hard tip which are designed to burrow themselves a set distance into the ground before exploding. The underground detonation creates a powerful shockwave much larger than the shell's explosion, which will impede the progress of any unit caught within it. Infantry will be thrown down and shrouded in dirt, while tanks will become bogged down and trapped by the shifting soil.
While the Tremor Cannon shell itself does relatively little damage, it is the side effect of the underground explosion that is invaluable, pinning the opponent in place and making him vulnerable to sustained bombardment by the other artillery elements of the Imperial Guard. Additionally, since the Tremor Cannon is much smaller than other super-heavy tank primary armaments, the Banehammer possesses a large empty hold, which can be used to either transport a small platoon of Imperial Guardsmen, or house a cramped but fully functional headquarters equipped with powerful Vox-casters and tactical arrays from which the officer in charge can lead his troops. While the shockwave of the Tremor Cannon is moderately efficient against heavily reinforced fortifications, it makes short work of lighter defences like trenches and similar earthworks, collapsing them outright and burying any enemy attempting to take shelter within them alive.
- Codex: Astra Militarum (8th Edition), pg. 54
- Imperial Armour Apocalypse II, pg. 10
- Warhammer 40,000 Apocalypse (6th Edition), pp. 136-137